title: Prognostication of bladder carcinoma by immunohistochemistry: refined and combined analysis of staining for MCA and CA50.
abstract: The immunohistochemical reactivity of tumour markers MCA and CA50 was determined in transitional cell carcinoma of the bladder of WHO grades I-III. The material consisted of paraffin-embedded biopsies from bladder tumors in 83 patients. Mean follow-up time was 13 years (range 9.6-22 years). Staining indexes for the whole section and for the area with maximal staining intensity were calculated (for MCA; IMCAtot, IMCAmax, for CA 50: ICA50tot, ICA50max). Also two combination indexes were created (Itot, Imax). The relations between histological grade on one hand, and IMCAtot (p less than 0.001), IMCAmax (p = 0.007), ICA50tot (p less than 0.001), and ICA50max (p less than 0.001) on the other were statistically significant. IMCAtot (p = 0.008) and ICA50max (p 0.040) had a statistically significant relation to clinical stage. IMCAtot (p = 0.004) and IMCAmax (p = 0.001) also predicted node involvement with statistical significance. Metastasizing behavior could be predicted with all four indexes with statistical significance (IMCAtot p = 0.021; IMCAmax, p = 0.001; ICA50tot, p = 0.021; ICA50max, p = 0.050), but best with IMCAmax. Bladder cancer survival was related to IMCAtot (p = 0.044) and to ICA50tot (p = 0.0009) with statistical significance. The higher the MCA positivity and the lower the CA50 positivity, the worse was the prognosis. The combination index (Itot) predicted survival (p = 0.0004) better than IMCAtot or ICA50tot separately. Itot and Imax did not offer any advantages over other indexes in predicting node involvement or metastasis. Grade II tumors were divided into two prognostic groups using Itot, but the difference between survival was not statistically significant.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Department of Pathology, University of Kuopio, Finland.
authors.forename: P K
authors.initials: PK
authors.lastname: Lipponen
authors.forename: M J
authors.initials: MJ
authors.lastname: Eskelinen
authors.forename: Y
authors.initials: Y
authors.lastname: Collan
mesh_terms: D000368:Aged; D000951:Antigens, Neoplasm / Q000032:analysis*; D015295:Antigens, Tumor-Associated, Carbohydrate / Q000032:analysis*; D014408:Biomarkers, Tumor / Q000032:analysis*; D002295:Carcinoma, Transitional Cell / Q000737:chemistry / Q000175:diagnosis* / Q000401:mortality; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D008297:Male; D011379:Prognosis; D016019:Survival Analysis; D001743:Urinary Bladder / Q000737:chemistry*; D001749:Urinary Bladder Neoplasms / Q000737:chemistry / Q000175:diagnosis* / Q000401:mortality
chemical_list: D000951:Antigens, Neoplasm; D015295:Antigens, Tumor-Associated, Carbohydrate; D014408:Biomarkers, Tumor; C057387:mucinous carcinoma-associated antigen